PNGINC = -I/Users/rich/include
PNGLIB = -L/Users/rich/lib  -lpng # dynamically linked against libpng

ZINC = -I/usr/local/include
ZLIB = -L/usr/local/lib -lz		# dynamically linked against zlib

INCS = $(PNGINC) $(ZINC)
RLIBS = $(PNGLIB) $(ZLIB) -lm
WLIBS = $(PNGLIB) $(ZLIB)

CC = gcc
LD = gcc
RM = rm -f
CFLAGS = -g -Wall $(INCS)
LDFLAGS =

all: rw_png

rw_png: rw_png.c readpng.h readpng.o writepng.o readpng.h
	$(CC) $(CFLAGS) -o rw_png rw_png.c readpng.o writepng.o $(RLIBS)